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1. The difference between turbine flowmeter and vortex flowmeter
Turbine flowmeter and vortex flowmeter have significant differences in design principles, application scope, and characteristics, as follows: Design principle Turbine flowmeter: belongs to velocity flowmeter, focusing on measuring liquids. The principle is to use the relationship between the rotational angular velocity of the impeller placed in the liquid and the liquid flow velocity, and calculate the liquid flow rate by measuring the impeller speed. Vortex flowmeter: designed and manufactured based on the Karman vortex principle, using fluid oscillation principle to measure flow rate. When a fluid passes through a vortex sealed flow transmitter in a pipeline, two columns of vortices proportional to the flow velocity will alternate up and down behind the triangular vortex generator. The frequency of vortex release is related to the average velocity of the fluid and the characteristics of the vortex generator. Application scope: Turbine flowmeter is widely used for measuring objects such as petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, coal gas, and low-temperature flow sensors. Vortex flowmeter: mainly used for flow measurement of industrial pipeline medium fluids, suitable for various media such as gas, liquid, vapor, etc. Characteristics of turbine flowmeter: simple structure, few processed parts, light weight, easy maintenance. Large circulation capacity, with a large amount of flow that can be passed through with the same caliber. Can adapt to high parameter environments such as high temperature, high pressure, and low temperature. Vortex flowmeter: small pressure loss, large range, high accuracy. When measuring
2. Advantages and disadvantages of vortex flowmeter
The advantages of vortex flowmeter include reliable structure, wide measurement range, high accuracy, and low maintenance;
; Disadvantages include the need for density conversion, susceptibility to vibration induced pulley disturbances, and high requirements for flow field uniformity. The specific analysis is as follows: the advantages are that there are no movable parts, the structure is simple and reliable: the vortex flowmeter has no movable parts, and the measuring element has a simple sliding layout, which makes its function reliable, has a long service life, and reduces maintenance needs caused by component wear or failure. Volume flow rate is not affected by thermal parameters: The volume flow rate measured by a vortex flowmeter is not affected by thermal parameters such as temperature, pressure, density, or viscosity of the measured fluid. This means that under different operating conditions, its volume flow rate measurement results are relatively stable and usually do not require separate calibration, simplifying the usage process. Wide range of measuring media: It can measure the flow rate of liquids, gases, or vapors, with a wide range of applications, and can meet the needs of various industrial production scenarios. Small pressure loss: During the measurement process, the pressure loss generated by the vortex flowmeter is small, which helps to reduce interference with the fluid s